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When to Plant Tomatillo in Franklin County, NC

Franklin County, North Carolina Zone 7b April

Franklin County, North Carolina gardeners: here's your April plan

Your Franklin County, North Carolina garden is entering a new phase. Here's what's on the schedule for April and why each task matters now.

Avg. last frost March 27
Avg. first frost November 6
Soil temp (4") 56°F
Watering Moderate
Pest pressure Moderate
Daylight 12.9 hrs
  1. Transplant tomatillo outside

    Plant tomatoes deep — bury the stem up to the first true leaves to grow extra roots. Everything else goes in at the same depth it grew in the tray.

  2. Outdoor sowing time: tomatillo

    Thin ruthlessly once seedlings are up. Crowded roots mean smaller crops from every plant.

Get ahead of May
  • Starting indoors: tomatillo

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Tomatillos are a Mexican staple that produces tart, green fruits enclosed in papery husks. They are essential for salsa verde and green sauces.

Franklin County, North Carolina is in USDA Zone 7b. The average last spring frost is March 27 and the first fall frost is November 6, giving you a growing season of approximately 224 days.

At an elevation of 285 feet, Franklin County receives approximately 43.8 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92°F, providing good warmth for Tomatillo during the growing season. Clay soil retains moisture well for Tomatillo, but amend with compost to improve drainage and prevent root rot.

Franklin County, NC (Zone 7b) Long season
224 days
Last Spring Frost March 27
224 growing days
First Fall Frost November 6

Franklin County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (79 days to spare)
Start indoors: Jan 31 Transplant: Apr 4 🍅 Harvest: Jun 6 – Aug 15
Recommended (50%) ✓ Fits season (77 days to spare)
Start indoors: Feb 6 Transplant: Apr 10 🍅 Harvest: Jun 12 – Aug 21
Safe Start (90%) ✓ Fits season (76 days to spare)
Start indoors: Feb 21 Transplant: Apr 25 🍅 Harvest: Jun 27 – Sep 5

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Soil Compatibility in Franklin County

How your county's soil matches Tomatillo's growing requirements.

Soil pH

Your soil pH (5.5–6.4) is more acidic than Tomatillo prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

The clay loam soil in Franklin County is excellent for Tomatillo — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Tomatillo.

How to Plant Tomatillo

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Succession Planting Tomatillo

4
successive plantings in your 224-day season

Sow every 6.9 weeks. Last sowing by Aug 13 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.8″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 556 gal / 100 sq ft

Monthly Watering Guide for Tomatillo

Tomatillo needs approximately 1.1 inches of water per week (4.8" per month). Here's how your county's rainfall compares month by month.

Month Tomatillo Needs Rainfall You Supplement Action
Jan 3.6" 0" ❄️ Dormant
Feb 3.1" 0" ❄️ Dormant
Mar 4.8" 4.6" 0.2" 💧 Light watering
Apr 4.8" 2.9" 1.9" 💧 Light watering
May 4.8" 3" 1.8" 💧 Light watering
Jun 4.8" 4.4" 0.4" 💧 Light watering
Jul 4.8" 4.7" 0.1" 💧 Light watering
Aug 4.8" 4.7" 0.1" 💧 Light watering
Sep 4.8" 3.5" 1.3" 💧 Light watering
Oct 4.8" 2.8" 2" 💧 Light watering
Nov 4.8" 3.1" 1.7" 💧 Light watering
Dec 3.5" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Franklin County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Tomatillo Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Tomatillo needs ~1,378 GDD — county provides 4,256 GDD Excellent fit

Tomatillo Planting Timeline — Franklin County, NC

Tomatillo Planting Calendar

Activity When Date Range
Start Indoors February 6 Feb 6 – Feb 20
Transplant Outdoors April 10 Apr 10 – Apr 24
Direct Sow April 3 Apr 3 – Apr 24
Harvest June 12 Jun 12 – Aug 21

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March
April Transplant Outdoors Direct Sow
May
June Harvest
July Harvest
August Harvest
September
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.1"/week · Only during dry spells

📅 Days to Maturity

60–85 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 7b

📆 Growing Season

224 days in Franklin County

Growing Tips for Tomatillo in Franklin County

Direct sow Tomatillo outdoors after March 27 in Franklin County when soil has warmed and frost danger has passed.

With Franklin County's clay soil (28% clay), work in 3-4 inches of compost before planting Tomatillo. Avoid tilling when soil is wet to prevent compaction.

Common pests for Tomatillo in this region include tomato hornworm and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 6-8 weeks before last frost. Plant at least two plants for cross-pollination. Harvest when fruits fill the husk and it begins to split.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel
  • Dill

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Tomatillo in Franklin County, NC?

Franklin County is in Zone 7b with an average last frost of March 27. Plan your Tomatillo planting based on this frost date — see the calendar above for exact timing.

What planting zone is Franklin County, NC?

Franklin County, North Carolina is in USDA Hardiness Zone 7b. The average last spring frost is March 27 and first fall frost is November 6.

🌱

Your Franklin County Garden Planner — Free

A 24-page printable planner built for Franklin County (Zone 7b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Franklin County, NC. Local conditions may vary. Last updated: April 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.